package com.sky.config;

import com.sky.interceptor.JwtTokenAdminInterceptor;
import com.sky.interceptor.JwtTokenUserInterceptor;
import com.sky.json.JacksonObjectMapper;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport;
import springfox.documentation.builders.ApiInfoBuilder;
import springfox.documentation.builders.PathSelectors;
import springfox.documentation.builders.RequestHandlerSelectors;
import springfox.documentation.service.ApiInfo;
import springfox.documentation.spi.DocumentationType;
import springfox.documentation.spring.web.plugins.Docket;

import java.util.List;

/**
 * 配置类，注册web层相关组件
 */
@Configuration
@Slf4j
public class WebMvcConfiguration extends WebMvcConfigurationSupport {

  @Autowired
  private JwtTokenAdminInterceptor jwtTokenAdminInterceptor;
  @Autowired
  JwtTokenUserInterceptor jwtTokenUserInterceptor;
  /**
   * 注册自定义拦截器
   * @param registry
   */
  protected void addInterceptors(InterceptorRegistry registry) {
    log.info("开始注册自定义拦截器...");
    registry.addInterceptor(jwtTokenAdminInterceptor)
      .addPathPatterns("/admin/**")
      .excludePathPatterns("/admin/employee/login");

    registry.addInterceptor(jwtTokenUserInterceptor)
      .addPathPatterns("/user/**")
      .excludePathPatterns("/user/user/login")
      .excludePathPatterns("/user/shop/status");
  }

  /**
   * 通过knife4j生成接口文档
   * @return
   */
  @Bean
  public Docket docket1() {
    ApiInfo apiInfo = new ApiInfoBuilder()
      .title("外卖项目接口文档")
      .version("2.0")
      .description("外卖项目接口文档")
      .build();
    Docket docket = new Docket(DocumentationType.SWAGGER_2)
      .groupName("管理端接口")
      .apiInfo(apiInfo)
      .select()
      .apis(RequestHandlerSelectors.basePackage("com.sky.controller.admin"))
      .paths(PathSelectors.any())
      .build();
    return docket;
  }


  @Bean
  public Docket docket2() {
    ApiInfo apiInfo = new ApiInfoBuilder()
      .title("外卖项目接口文档")
      .version("2.0")
      .description("外卖项目接口文档")
      .build();
    Docket docket = new Docket(DocumentationType.SWAGGER_2)
      .groupName("用户端接口")
      .apiInfo(apiInfo)
      .select()
      .apis(RequestHandlerSelectors.basePackage("com.sky.controller.user"))
      .paths(PathSelectors.any())
      .build();
    return docket;
  }

  /**
   * 设置静态资源映射
   * @param registry
   */
  protected void addResourceHandlers(ResourceHandlerRegistry registry) {
    registry.addResourceHandler("/doc.html").addResourceLocations("classpath:/META-INF/resources/");
    registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
  }

  /**
   * 配置消息转换器：统一对后端返回给前端的数据进行处理
   * @param converters
   */
  protected void extendMessageConverters(List<HttpMessageConverter<?>> converters) {
    log.info("扩展消息转换器");
    // 创建一个消息转换器对象
    MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
    // 需要为消息转换器设置一个对象转换器，可以将java对象序列化为json数据
    converter.setObjectMapper(new JacksonObjectMapper());
    // 将自己的这个消息转换器加入到容器中(第0个位置，确保converters内置的消息转换器不会影响到自己定义的)
    converters.add(0,converter);
  }

}
